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Diffstat (limited to 'vcl/win/dtrans/FetcList.cxx')
| -rw-r--r-- | vcl/win/dtrans/FetcList.cxx | 340 |
1 files changed, 340 insertions, 0 deletions
diff --git a/vcl/win/dtrans/FetcList.cxx b/vcl/win/dtrans/FetcList.cxx new file mode 100644 index 000000000..5ace3cdca --- /dev/null +++ b/vcl/win/dtrans/FetcList.cxx @@ -0,0 +1,340 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <osl/diagnose.h> +#include "FetcList.hxx" +#include "Fetc.hxx" +#include <com/sun/star/container/NoSuchElementException.hpp> +#include <com/sun/star/datatransfer/MimeContentTypeFactory.hpp> +#include <com/sun/star/datatransfer/XMimeContentType.hpp> + +#include "DataFmtTransl.hxx" +#include "ImplHelper.hxx" +#include "WinClip.hxx" + +#include <algorithm> + +#include "MimeAttrib.hxx" + +using namespace com::sun::star::uno; +using namespace com::sun::star::datatransfer; +using namespace com::sun::star::lang; +using namespace com::sun::star::container; + +LCID CFormatRegistrar::m_TxtLocale = 0; +sal_uInt32 CFormatRegistrar::m_TxtCodePage = GetACP( ); + +CFormatEtcContainer::CFormatEtcContainer( ) +{ + m_EnumIterator = m_FormatMap.begin( ); +} + +void CFormatEtcContainer::addFormatEtc( const CFormatEtc& fetc ) +{ + m_FormatMap.push_back( fetc ); +} + +void CFormatEtcContainer::removeFormatEtc( const CFormatEtc& fetc ) +{ + FormatEtcMap_t::iterator iter = + find( m_FormatMap.begin(), m_FormatMap.end(), fetc ); + + if ( iter != m_FormatMap.end( ) ) + m_FormatMap.erase( iter ); +} + +void CFormatEtcContainer::removeAllFormatEtc( ) +{ + m_FormatMap.clear( ); +} + +bool CFormatEtcContainer::hasFormatEtc( const CFormatEtc& fetc ) const +{ + FormatEtcMap_t::const_iterator iter = + find( m_FormatMap.begin(), m_FormatMap.end(), fetc ); + + return ( iter != m_FormatMap.end( ) ); +} + +bool CFormatEtcContainer::hasElements( ) const +{ + return !m_FormatMap.empty(); +} + +void CFormatEtcContainer::beginEnumFormatEtc( ) +{ + m_EnumIterator = m_FormatMap.begin( ); +} + +sal_uInt32 CFormatEtcContainer::nextFormatEtc( LPFORMATETC lpFetc, + sal_uInt32 aNum ) +{ + OSL_ASSERT( lpFetc ); + OSL_ASSERT( !IsBadWritePtr( lpFetc, sizeof( FORMATETC ) * aNum ) ); + + sal_uInt32 nFetched = 0; + + for ( sal_uInt32 i = 0; i < aNum; i++, nFetched++, lpFetc++, ++m_EnumIterator ) + { + if ( m_EnumIterator == m_FormatMap.end() ) + break; + CopyFormatEtc( lpFetc, *m_EnumIterator ); + } + + return nFetched; +} + +bool CFormatEtcContainer::skipFormatEtc( sal_uInt32 aNum ) +{ + FormatEtcMap_t::const_iterator iter_end = m_FormatMap.end( ); + for ( sal_uInt32 i = 0; + (i < aNum) && (m_EnumIterator != iter_end); + i++, ++m_EnumIterator ) + ;/* intentionally left empty */ + + return ( m_EnumIterator != m_FormatMap.end( ) ); +} + +CFormatRegistrar::CFormatRegistrar( const Reference< XComponentContext >& rxContext, + const CDataFormatTranslator& aDataFormatTranslator ) : + m_DataFormatTranslator( aDataFormatTranslator ), + m_bHasSynthesizedLocale( false ), + m_xContext( rxContext ) +{ +} + +// this function converts all DataFlavors of the given FlavorList into +// an appropriate FORMATETC structure, for some formats like unicodetext, +// text and text/html we will offer an accompany format e.g.: +// +// DataFlavor | Registered Clipformat | Registered accompany clipformat +// -------------------------|---------------------------|----------------------------------- +// text/plain;charset=ansi | CF_TEXT | CF_UNICODETEXT +// | | CF_LOCALE (if charset != GetACP() +// | | +// text/plain;charset=oem | CF_OEMTEXT | CF_UNICODETEXT +// | | CF_LOCALE (if charset != GetOEMCP() +// | | +// text/plain;charset=utf-16| CF_UNICODETEXT | CF_TEXT +// | | +// text/html | HTML (Hypertext ...) | HTML Format +// | | +// +// if some tries to register different text formats with different charsets the last +// registered wins and the others are ignored + +void CFormatRegistrar::RegisterFormats( + const Reference< XTransferable >& aXTransferable, CFormatEtcContainer& aFormatEtcContainer ) +{ + Sequence< DataFlavor > aFlavorList = aXTransferable->getTransferDataFlavors( ); + sal_Int32 nFlavors = aFlavorList.getLength( ); + bool bUnicodeRegistered = false; + DataFlavor aFlavor; + + for( sal_Int32 i = 0; i < nFlavors; i++ ) + { + aFlavor = aFlavorList[i]; + CFormatEtc fetc = m_DataFormatTranslator.getFormatEtcFromDataFlavor( aFlavor ); + + // maybe an internal format so we ignore it + if ( CF_INVALID == fetc.getClipformat( ) ) + continue; + + if ( !needsToSynthesizeAccompanyFormats( fetc ) ) + aFormatEtcContainer.addFormatEtc( fetc ); + else + { + // if we haven't registered any text format up to now + if ( CDataFormatTranslator::isTextFormat( fetc.getClipformat() ) && !bUnicodeRegistered ) + { + // if the transferable supports unicode text we ignore + // any further text format the transferable offers + // because we can create it from Unicode text in addition + // we register CF_TEXT for non unicode clients + if ( CDataFormatTranslator::isUnicodeTextFormat( fetc.getClipformat() ) ) + { + aFormatEtcContainer.addFormatEtc( fetc ); // add CF_UNICODE + aFormatEtcContainer.addFormatEtc( + CDataFormatTranslator::getFormatEtcForClipformat( CF_TEXT ) ); // add CF_TEXT + bUnicodeRegistered = true; + } + else if ( !hasUnicodeFlavor( aXTransferable ) ) + { + // we try to investigate the charset and make a valid + // windows codepage from this charset the default + // return value is the result of GetACP( ) + OUString charset = getCharsetFromDataFlavor( aFlavor ); + sal_uInt32 txtCP = getWinCPFromMimeCharset( charset ); + + // we try to get a Locale appropriate for this codepage + if ( findLocaleForTextCodePage( ) ) + { + m_TxtCodePage = txtCP; + + aFormatEtcContainer.addFormatEtc( + CDataFormatTranslator::getFormatEtcForClipformat( CF_UNICODETEXT ) ); + + if ( !IsOEMCP( m_TxtCodePage ) ) + aFormatEtcContainer.addFormatEtc( + CDataFormatTranslator::getFormatEtcForClipformat( CF_TEXT ) ); + else + aFormatEtcContainer.addFormatEtc( + CDataFormatTranslator::getFormatEtcForClipformat( CF_OEMTEXT ) ); + + aFormatEtcContainer.addFormatEtc( + CDataFormatTranslator::getFormatEtcForClipformat( CF_LOCALE ) ); + + // we save the flavor so it's easier when + // queried for it in XTDataObject::GetData(...) + m_RegisteredTextFlavor = aFlavor; + m_bHasSynthesizedLocale = true; + } + } + } + else if ( CDataFormatTranslator::isTextHtmlFormat( fetc.getClipformat( ) ) ) // Html (Hyper Text...) + { + // we add text/html ( HTML (HyperText Markup Language) ) + aFormatEtcContainer.addFormatEtc( fetc ); + + // and HTML Format + aFormatEtcContainer.addFormatEtc( + CDataFormatTranslator::getFormatEtcForClipformatName( "HTML Format" ) ); + } + } + } +} + +bool CFormatRegistrar::hasSynthesizedLocale( ) const +{ + return m_bHasSynthesizedLocale; +} + +LCID CFormatRegistrar::getSynthesizedLocale( ) +{ + return m_TxtLocale; +} + +sal_uInt32 CFormatRegistrar::getRegisteredTextCodePage( ) +{ + return m_TxtCodePage; +} + +DataFlavor CFormatRegistrar::getRegisteredTextFlavor( ) const +{ + return m_RegisteredTextFlavor; +} + +bool CFormatRegistrar::isSynthesizeableFormat( const CFormatEtc& aFormatEtc ) +{ + return ( CDataFormatTranslator::isOemOrAnsiTextFormat( aFormatEtc.getClipformat() ) || + CDataFormatTranslator::isUnicodeTextFormat( aFormatEtc.getClipformat() ) || + CDataFormatTranslator::isHTMLFormat( aFormatEtc.getClipformat() ) ); +} + +inline +bool CFormatRegistrar::needsToSynthesizeAccompanyFormats( const CFormatEtc& aFormatEtc ) +{ + return ( CDataFormatTranslator::isOemOrAnsiTextFormat( aFormatEtc.getClipformat() ) || + CDataFormatTranslator::isUnicodeTextFormat( aFormatEtc.getClipformat() ) || + CDataFormatTranslator::isTextHtmlFormat( aFormatEtc.getClipformat( ) ) ); +} + +OUString CFormatRegistrar::getCharsetFromDataFlavor( const DataFlavor& aFlavor ) +{ + OUString charset; + + try + { + Reference< XMimeContentTypeFactory > xMimeFac = + MimeContentTypeFactory::create(m_xContext); + + Reference< XMimeContentType > xMimeType( xMimeFac->createMimeContentType( aFlavor.MimeType ) ); + if ( xMimeType->hasParameter( TEXTPLAIN_PARAM_CHARSET ) ) + charset = xMimeType->getParameterValue( TEXTPLAIN_PARAM_CHARSET ); + else + charset = getMimeCharsetFromWinCP( GetACP( ), PRE_WINDOWS_CODEPAGE ); + } + catch(NoSuchElementException&) + { + OSL_FAIL( "Unexpected" ); + } + catch(...) + { + OSL_FAIL( "Invalid data flavor" ); + } + + return charset; +} + +bool CFormatRegistrar::hasUnicodeFlavor( const Reference< XTransferable >& aXTransferable ) const +{ + DataFlavor aFlavor = m_DataFormatTranslator.getDataFlavorFromFormatEtc(CF_UNICODETEXT); + + return aXTransferable->isDataFlavorSupported( aFlavor ); +} + +bool CFormatRegistrar::findLocaleForTextCodePage( ) +{ + m_TxtLocale = 0; + EnumSystemLocalesA( CFormatRegistrar::EnumLocalesProc, LCID_INSTALLED ); + return IsValidLocale( m_TxtLocale, LCID_INSTALLED ); +} + +bool CFormatRegistrar::isLocaleCodePage( LCID lcid, LCTYPE lctype, sal_uInt32 codepage ) +{ + char buff[6]; + sal_uInt32 localeCodePage; + + OSL_ASSERT( IsValidLocale( lcid, LCID_INSTALLED ) ); + + // get the ansi codepage of the current locale + GetLocaleInfoA( lcid, lctype, buff, sizeof( buff ) ); + localeCodePage = atol( buff ); + + return ( localeCodePage == codepage ); +} + +inline +bool CFormatRegistrar::isLocaleOemCodePage( LCID lcid, sal_uInt32 codepage ) +{ + return isLocaleCodePage( lcid, LOCALE_IDEFAULTCODEPAGE, codepage ); +} + +inline +bool CFormatRegistrar::isLocaleAnsiCodePage( LCID lcid, sal_uInt32 codepage ) +{ + return isLocaleCodePage( lcid, LOCALE_IDEFAULTANSICODEPAGE, codepage ); +} + +BOOL CALLBACK CFormatRegistrar::EnumLocalesProc( LPSTR lpLocaleStr ) +{ + // the lpLocaleStr parameter is hexadecimal + LCID lcid = strtol( lpLocaleStr, nullptr, 16 ); + + if ( isLocaleAnsiCodePage( lcid, CFormatRegistrar::m_TxtCodePage ) || + isLocaleOemCodePage( lcid, CFormatRegistrar::m_TxtCodePage ) ) + { + CFormatRegistrar::m_TxtLocale = lcid; + return false; // stop enumerating + } + + return true; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |